Flues 20's can be attractive to some hunters because some of them are very light. However, the very light 20's in particular can have issues with frames that crack. If the chambers have been lengthened to 2 3/4" and you shoot whatever the big box stores have on special thinking they're light loads . . . well, while they're probably only 7/8 oz, the pressure may not be that low nor the velocity that slow. (After all, guys with autos they never clean expect those shells to work fine in their guns.)
The other issue with the Flues models is finding one with decent stock dimensions. Most of them are both on the short side and have too much drop for a lot of shooters used to modern stock dimensions.
